Temporary header file '/tmp/ce6TfsqJni/dump1.h' with the following content will be compiled to create GCC translation unit dump:

  // add defines
  #define __STDC_VERSION__ 201710L
#define _FILE_OFFSET_BITS 64
#define _GXX_NULLPTR_T
#define CLUTTER_ENABLE_COMPOSITOR_API 1
#define _REGEX_NELTS(n)
#define _Atomic
#define PACKED
#define getaddrinfo_a(a,b,c,d)

  // add includes
  #include "/usr/include/FTGL/FTBBox.h"
  #include "/usr/include/FTGL/FTBitmapGlyph.h"
  #include "/usr/include/FTGL/FTBuffer.h"
  #include "/usr/include/FTGL/FTBufferFont.h"
  #include "/usr/include/FTGL/FTBufferGlyph.h"
  #include "/usr/include/FTGL/FTExtrdGlyph.h"
  #include "/usr/include/FTGL/FTFont.h"
  #include "/usr/include/FTGL/FTGLBitmapFont.h"
  #include "/usr/include/FTGL/FTGLExtrdFont.h"
  #include "/usr/include/FTGL/FTGLOutlineFont.h"
  #include "/usr/include/FTGL/FTGLPixmapFont.h"
  #include "/usr/include/FTGL/FTGLPolygonFont.h"
  #include "/usr/include/FTGL/FTGLTextureFont.h"
  #include "/usr/include/FTGL/FTGLTriangleExtractorFont.h"
  #include "/usr/include/FTGL/FTGlyph.h"
  #include "/usr/include/FTGL/FTLayout.h"
  #include "/usr/include/FTGL/FTLibrary.h"
  #include "/usr/include/FTGL/FTOutlineGlyph.h"
  #include "/usr/include/FTGL/FTPixmapGlyph.h"
  #include "/usr/include/FTGL/FTPoint.h"
  #include "/usr/include/FTGL/FTPolyGlyph.h"
  #include "/usr/include/FTGL/FTSimpleLayout.h"
  #include "/usr/include/FTGL/FTTextureGlyph.h"
  #include "/usr/include/FTGL/FTTriangleExtractorGlyph.h"
  #include "/usr/include/FTGL/ftgl.h"

  // add namespaces
  namespace FTGL{typedef int tmp_add_type_1;}
  FTGL::tmp_add_type_1 tmp_add_func_1(){return 0;};

  // add classes
  FTBBox* tmp_add_class_0;
  FTBitmapFont* tmp_add_class_1;
  FTBitmapGlyph* tmp_add_class_2;
  FTBuffer* tmp_add_class_3;
  FTBufferFont* tmp_add_class_4;
  FTBufferGlyph* tmp_add_class_5;
  FTExtrudeFont* tmp_add_class_6;
  FTExtrudeGlyph* tmp_add_class_7;
  FTFont* tmp_add_class_8;
  FTGlyph* tmp_add_class_9;
  FTLayout* tmp_add_class_10;
  FTLibrary* tmp_add_class_11;
  FTOutlineFont* tmp_add_class_12;
  FTOutlineGlyph* tmp_add_class_13;
  FTPixmapFont* tmp_add_class_14;
  FTPixmapGlyph* tmp_add_class_15;
  FTPoint* tmp_add_class_16;
  FTPolygonFont* tmp_add_class_17;
  FTPolygonGlyph* tmp_add_class_18;
  FTSimpleLayout* tmp_add_class_19;
  FTTextureFont* tmp_add_class_20;
  FTTextureGlyph* tmp_add_class_21;
  FTTriangleExtractorFont* tmp_add_class_22;
  FTTriangleExtractorGlyph* tmp_add_class_23;
  FT_BBox_* tmp_add_class_24;
  FT_BitmapGlyphRec_* tmp_add_class_25;
  FT_Bitmap_* tmp_add_class_26;
  FT_Bitmap_Size_* tmp_add_class_27;
  FT_CharMapRec_* tmp_add_class_28;
  FT_Data_* tmp_add_class_29;
  FT_FaceRec_* tmp_add_class_30;
  FT_Generic_* tmp_add_class_31;
  FT_GlyphRec_* tmp_add_class_32;
  FT_GlyphSlotRec_* tmp_add_class_33;
  FT_Glyph_Metrics_* tmp_add_class_34;
  FT_ListNodeRec_* tmp_add_class_35;
  FT_ListRec_* tmp_add_class_36;
  FT_Matrix_* tmp_add_class_37;
  FT_MemoryRec_* tmp_add_class_38;
  FT_Open_Args_* tmp_add_class_39;
  FT_OutlineGlyphRec_* tmp_add_class_40;
  FT_Outline_* tmp_add_class_41;
  FT_Outline_Funcs_* tmp_add_class_42;
  FT_Parameter_* tmp_add_class_43;
  FT_Raster_Funcs_* tmp_add_class_44;
  FT_Raster_Params_* tmp_add_class_45;
  FT_SizeRec_* tmp_add_class_46;
  FT_Size_Metrics_* tmp_add_class_47;
  FT_Size_RequestRec_* tmp_add_class_48;
  FT_Span_* tmp_add_class_49;
  FT_StreamDesc_* tmp_add_class_50;
  FT_StreamRec_* tmp_add_class_51;
  FT_SvgGlyphRec_* tmp_add_class_52;
  FT_UnitVector_* tmp_add_class_53;
  FT_Vector_* tmp_add_class_54;
  _G_fpos64_t* tmp_add_class_55;
  _G_fpos_t* tmp_add_class_56;
  _IO_cookie_io_functions_t* tmp_add_class_57;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/ce6TfsqJni/dump1.h"  -I/usr/include/freetype2